It is known that 10% of the calculators shipped from a particular factory are defective. What is the probability that exactly th

Question

3 years ago

5

ree of five chosen calculators are defective

1 answer:

IRINA_888 [86] · Answer 1 · 2022-04-09T09:38:35+03:00

Answer:0.0081 or 0.81%

Step-by-step explanation:

The required probability is P(3,5,0.1)= C5 3 * p^3*q^2, where

C5 3= 5!/3/2=4*5/2=10

p is the probability that one randomly selected calculator is defective= 10%=0.1

q is the probability that one randomly selected calculator is non-defective.

q=1-p=1-0.1=0.9

So P(3,5,0.1)= 10*0.1^3*0.9^2=0.01*0.81=0.0081